release prep for v0.6.0 (#142)

Author: Phil Varner

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [unreleased]
+## [v0.6.0] - 2025-02-11
 
 ### Added
 
@@ -169,7 +169,8 @@ Initial release
 - Add links `opportunities` and `create-order` to Product
 - Add link `create-order` to OpportunityCollection
 
-[unreleased]: https://github.com/stapi-spec/stapi-fastapi/compare/v0.5.0...main
+<!-- [unreleased]: https://github.com/stapi-spec/stapi-fastapi/compare/v0.5.0...main -->
+[v0.6.0]: https://github.com/stapi-spec/stapi-fastapi/tree/v0.6.0
 [v0.5.0]: https://github.com/stapi-spec/stapi-fastapi/tree/v0.5.0
 [v0.4.0]: https://github.com/stapi-spec/stapi-fastapi/tree/v0.4.0
 [v0.3.0]: https://github.com/stapi-spec/stapi-fastapi/tree/v0.3.0